Science Project: Release

Today I've merged a huge batch of updates into the default branch and released a number of Science Project modules on the Orchard Gallery. These are:

Mechanics 0.9.9 - including a whole new compositional UI system, allowing you to edit connector parts directly from the parent item; and introducing Plumbing which is a new routing system that takes advantage of connectors to produce nested
URLs, and will be a lot more customizable than the default routing (for instance using base URLs for content types, which a lot of people have asked for)

Origami 0.8.0 - low-level shape folding and UI composition API, introducing ModelDriver<T> which works like ContentPartDriver but can be used for any kind of model; Origami is used for the connectors UI that Mechanics builds

Quanta 0.7.5 - the per-item and group-based permissions system is now fully working and much easier to use; also including Signalling which used to be the separate Content Notifications module